impurity
英 [?m'pj??r?t?]
美[?m'pj?r?ti]
- n. 雜質(zhì)；不純；不潔
CET6擴(kuò)展詞匯
詞態(tài)變化
復(fù)數(shù):?impurities;
英文詞源
- impurity (n.)
- mid-15c., "thing which makes or is impure;" c. 1500, "fact or quality of being impure," from Middle French impurité, from impur (see impure). Related: Impurities.
雙語(yǔ)例句
- 1. The oxygen reacts vigorously with the impurity in the iron.
- 氧氣與鐵中的雜質(zhì)發(fā)生劇烈的化學(xué)反應(yīng).
來(lái)自辭典例句
- 2. This impurity must be purged away after death.
- 這種污穢應(yīng)該在死后加以凈化.
來(lái)自辭典例句
- 3. The impurity of supposedly pure subcellular fractions is a constant threat to the plant biochemist.
- 以為亞細(xì)胞組分很純而實(shí)際不純的情況,一直是植物化學(xué)家感到難辦的問(wèn)題.
來(lái)自辭典例句
- 4. Silica, in fact, is a desirable impurity because it is one of the reactants.
- 硅石實(shí)際上是一種有用的雜質(zhì),因?yàn)樗且环N反應(yīng)劑.
來(lái)自辭典例句
- 5. Reasons of forming first cracks were foundry lacuna, impurity gathering , lard exiting.
- 鑄造缺陷 、 雜質(zhì)元素偏聚和夾雜物的存在是形成早期裂紋源的原因.
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